Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8480951 | Tuyere structure of melting furnace | Yasunari Matsumura | 2013-07-09 |
| 8236233 | Taphole structure of melting furnace and repair method thereof | Yasunari Matsumura | 2012-08-07 |